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Date: Wed, 17 Jul 2013 21:33:32 +0200
Message-ID: <CANEZrP3F0Q_NXhhbkh=9CESAAmhntM_uKQEe0CJf=sDuJx2Xmw@mail.gmail.com>
From: Mike Hearn <mike@plan99.net>
To: Wendell <w@grabhive.com>
Content-Type: multipart/alternative; boundary=089e0115f34e3eed6504e1ba2b70
Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] SPV bitcoind? (was: Introducing
	BitcoinKit.framework)
Precedence: list

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Is that still accurate Michael?


On Wed, Jul 17, 2013 at 4:58 PM, Wendell <w@grabhive.com> wrote:

> "The libcoin/bitcoind client downloads the entire block chain 3.5 times
> faster than the bitcoin/bitcoind client. This is less than 90 minutes on a
> modern laptop!"
>
> Good lord Michael, I wish we had known about libcoin a month ago!
>
> -wendell
>
> grabhive.com | twitter.com/grabhive
>
> On Jul 17, 2013, at 4:31 PM, Michael Gronager wrote:
>
> > Hi Wendell,
> >
> > What Peter describes (a hash of the current set of UTXOs as part of the
> coinbase) is already implemented in libcoin, on which you can easily build
> both a bitcoind and any client. Libcoin is a library originally based on
> the satoshi client, and as such it is compatible/replacable with "master".
> >
> > Have a look at github.com/libcoin/libcoin and look in the
> BlockChain.h/cpp and the MerkleTrie classes then you can see how it works.
> >
> > What is missing from libcoin is a scheme to bootstrap the hash of UTXOs,
> there is some stub code for a p2pool like mining scheme ensuring several
> UTXO hashes every 10 minutes, but I will not have time to finalize it the
> first few months - anyone are of course welcome to help out ;)
> >
> > Michael
>
>
>
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Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Is that still accurate Michael?</div><div class=3D"gmail_e=
xtra"><br><br><div class=3D"gmail_quote">On Wed, Jul 17, 2013 at 4:58 PM, W=
endell <span dir=3D"ltr">&lt;<a href=3D"mailto:w@grabhive.com" target=3D"_b=
lank">w@grabhive.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">&quot;The libcoin/bitcoind client downloads =
the entire block chain 3.5 times faster than the bitcoin/bitcoind client. T=
his is less than 90 minutes on a modern laptop!&quot;<br>

<br>
Good lord Michael, I wish we had known about libcoin a month ago!<br>
<br>
-wendell<br>
<br>
<a href=3D"http://grabhive.com" target=3D"_blank">grabhive.com</a> | <a hre=
f=3D"http://twitter.com/grabhive" target=3D"_blank">twitter.com/grabhive</a=
><br>
<div class=3D"HOEnZb"><div class=3D"h5"><br>
On Jul 17, 2013, at 4:31 PM, Michael Gronager wrote:<br>
<br>
&gt; Hi Wendell,<br>
&gt;<br>
&gt; What Peter describes (a hash of the current set of UTXOs as part of th=
e coinbase) is already implemented in libcoin, on which you can easily buil=
d both a bitcoind and any client. Libcoin is a library originally based on =
the satoshi client, and as such it is compatible/replacable with &quot;mast=
er&quot;.<br>

&gt;<br>
&gt; Have a look at <a href=3D"http://github.com/libcoin/libcoin" target=3D=
"_blank">github.com/libcoin/libcoin</a> and look in the BlockChain.h/cpp an=
d the MerkleTrie classes then you can see how it works.<br>
&gt;<br>
&gt; What is missing from libcoin is a scheme to bootstrap the hash of UTXO=
s, there is some stub code for a p2pool like mining scheme ensuring several=
 UTXO hashes every 10 minutes, but I will not have time to finalize it the =
first few months - anyone are of course welcome to help out ;)<br>

&gt;<br>
&gt; Michael<br>
<br>
</div></div><br>-----------------------------------------------------------=
-------------------<br>
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Isolate bottlenecks and diagnose root cause in seconds.<br>
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<br></blockquote></div><br></div>

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